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Standard Bearings

Standard Bearings
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Standard Bearings

Product catalog summary
Overview: This document provides comprehensive specifications and characteristics for various types of ball bearings, including extra-small, miniature, double-row deep groove, angular contact, spherical roller, radial needle roller, and cage assemblies. It covers dimensions, load ratings, speed limits, and specific features for each bearing type.
1. Extra-Small and Miniature Ball Bearings:
  • Available in flanged types, these bearings range from 1 mm to 9 mm in diameter.
  • Specifications include boundary dimensions, basic load ratings, fatigue factors, and limiting speeds for grease and oil lubrication.
  • Details such as flange dimensions and mounting dimensions are provided for each bearing type.
2. Double-Row Deep Groove Ball Bearings:
  • Designed for high load capacity applications, available in sizes from 10 mm to 60 mm in diameter.
  • Accommodate both radial and axial loads with integrated inner and outer rings.
  • Specifications include boundary dimensions, basic load ratings, fatigue factors, and limiting speeds.
3. Angular Contact Ball Bearings:
  • Suitable for high-accuracy and high-speed applications, designed to carry combined loads.
  • Available in single-row, matched pair, and double-row configurations with contact angles of 15°, 30°, and 40°.
  • Preloading enhances rigidity and performance, with preload levels specified as slight, light, medium, and heavy.
  • Four-point contact ball bearings are suitable for significant axial loads.
4. Tolerances and Fits:
  • Standard tolerances specified according to JIS B 1514-1, with special tolerances for high-precision applications.
  • Recommended fits for various classes of bearings, including high-precision matched pair bearings.
5. Spherical Roller Bearings:
  • Designed for large load capacity and self-aligning capability, suitable for low- or medium-speed applications.
  • Available in cylindrical and tapered bore types, with specific codes indicating taper ratio.
  • Lubrication features include holes, grooves, and anti-rotation pin holes.
6. Radial Needle Roller and Cage Assemblies:
  • Focus on single-row and double-row assemblies in the metric series.
  • Includes boundary dimensions, basic load ratings, fatigue load limits, cage materials, limiting speeds, and recommended dimensions.
7. Needle Roller Bearings and Inner Rings:
  • Includes both metric and inch series dimensions, with specifications for inner rings and miniature one-way clutches.
  • Details on shaft diameters, boundary dimensions, and mass for inner rings.
8. Miniature One-Way Clutches:
  • Explains structure and principles, detailing torque capacity, operating temperature range, and locking life.
  • Includes shaft tolerance requirements and notes on surface hardness and roughness.
9. Ball Bearing Units:
  • Describes pillow block type, flanged type, and other variations, highlighting self-alignment capabilities.
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Catalog excerpts

Standard Bearings-1

Bearing specification tables

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Standard Bearings-2

Contents Standard bearings Snap ring groove/ Extra-small, miniature ball bearings Flanged type (open/shielded type) ... B 46 Adapter assemblies for self-aligning ball bearings ... B 136 Adapter assemblies Withdrawal sleeves Needle roller and cage assemblies ... B 380 Special purpose bearings K-series super thin section Deep groove type Four-point contact type Rolling mill roll neck bearings ... C 65

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Deep groove ball bearings Single-row deep groove ball bearings Deep groove ball bearings are available in a variety of sizes, and are the most popular of all rolling bearings. This type of bearing supports radial load and a certain degree of axial load in both directions simultaneously. ■ Shielded / sealed type • Simplifies sealing structure of applications. • Greasing is not necessary because bearings are pre-lubricated. • Table 1 on the next page lists major shielded and sealed bearing types and compares their performance. ■ With locating snap ring • Bearings with a locating snap ring can be...

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Boundary dimensions JTEKT [Notes] 1) Illustration (a) of the ZZ type shows the relatively small size bearing. 2) Illustration (d) of the 2RS type shows the relatively small size bearing. 3) The operating temperature range listed is for the standard type. It can be widened by using a different type of grease or sealing material. Consult with JTEKT for details. 1) The shielded/sealed type deep groove ball bearing and the deep groove ball bearing with a locating snap ring are designed for use with the inner ring rotating. Consult with JTEKT on use with the outer ring rotating. 2) When the axial...

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Standard Bearings-5

Single-row deep groove ball bearings open type d 10 ~ (17) mm _JTEKT Boundary dimensions Basic load ratings Fatigue load limit Limiting speeds Mounting dimensions Boundary dimensions Basic load ratings Fatigue load limit Limiting speeds Mounting dimensions [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball bearings open type d 30 ~ (40) mm _JTEKT Boundary dimensions Basic load ratings Fatigue load limit Limiting speeds Mounting dimensions Boundary dimensions Basic load ratings Fatigue load limit Limiting speeds Mounting dimensions [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball bearings open type d (60) ~ (80) mm _JTEKT Boundary dimensions Basic load ratings Fatigue load limit Limiting speeds Mounting dimensions Boundary dimensions Basic load ratings Fatigue load limit Limiting speeds Mounting dimensions [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball bearings open type d (100) ~ (140) mm _JTEKT Boundary dimensions Basic load ratings Fatigue load limit Limiting speeds Mounting dimensions Boundary dimensions Basic load ratings Fatigue load limit Limiting speeds Mounting dimensions [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball bearings open type d (190) ~ (260) mm _JTEKT d (260) ~ (360) mm Boundary dimensions Basic load ratings Fatigue load limit Limiting speeds Mounting dimensions Boundary dimensions Basic load ratings Fatigue load limit Limiting speeds Mounting dimensions [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball bearings open type d (360) ~ (500) mm Boundary dimensions [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball shielded type sealed type bearings JTEKT d 10 ~ (20) mm Extremely light contact sealed Contact sealed Boundary dimensions [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball bearings shielded type sealed type d (20) ~ 35 mm Extremely light contact sealed Contact sealed Boundary dimensions [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball shielded type sealed type bearings JTEKT d 40 ~ (65) mm Extremely light contact sealed Contact sealed Boundary dimensions [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball shielded type sealed type bearings JTEKT d (65) ~ (90) mm Extremely light contact sealed Contact sealed Boundary dimensions [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball shielded type sealed type bearings JTEKT d (90) ~ (130) mm Extremely light contact sealed Contact sealed Boundary dimensions [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball shielded type sealed type bearings JTEKT d (130) ~ 220 mm Extremely light contact sealed Contact sealed Boundary dimensions [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball bearings snap ring groove type locating snap ring type d 10 ~ (28) mm [Note] 1) The tolerance of the ring groove width is ±0.125. [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball bearings snap ring groove type locating snap ring type d (28) ~ (50) mm [Note] 1) The tolerance of the ring groove width is ±0.125. [Remark] Standard cage types used for the above bearings are described earlier in this section.

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Single-row deep groove ball bearings snap ring groove type locating snap ring type d (50) ~ 90 mm [Remsark] Stan dard cage typies used for the above bearings are described earlier in this section.

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Single-row deep groove snap ring groove type locating snap ring type d 95 ~ 130 mm ball bearings irf N With snap ring groove NR With locating snap ring Snap ring groove details With locating snap ring and one shield Boundary dimensions [Remark] Stan dard cage typies used for the above bearings are described earlier in this section.

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